* only report scale/offset deduced from ModelTiepointTag and ModelPixelScaleTag if the SRS has a vertical component (and thus currently if GTIFF_REPORT_COMPD_CS is set) (https://issues.qgis.org/issues/20493)

* Lerc codec: properly initialize state after Create() so that BuildOverviews() succeed (#1257)

KMLSuperOverlay driver:

* report color table of single overlay datasets, and also handle some variation in the KML structure (https://issues.qgis.org/issues/20173)